비행사고와 Alcohol

Daves, Gustave L.,손영호 공군본부 의무감실 1968 항공의학 Vol.16 No.1-2

Nightbird Passage

Dave Lorne(Dave Lorne ) 한국캐나다학회 2013 Asia-Pacific Journal of Canadian Studies (APJCS) Vol.19 No.1

Badami writes the ancient Upanishad horse and chariot archetype into Can You Hear the Nightbird Call of 2007 in with the subliminal use of Sanskrit philology understanding a cultural origin for the need to disguise this archetype with similar homonyms and allusions for some socio-political motive. The c[h]akra-causal or chariot-horse or time [chronos] archetype has been present since ancient Sanskrit writings through the influences upon the Canadian such as classical, Russian and English.

Hole quality assessment of drilled CFRP and CFRP-Ti stacks holes using polycrystalline diamond (PCD) tools

Dave Kim,Aaron Beal,Kiweon Kang,Sang-Young Kim 한국탄소학회 2017 Carbon Letters Vol.23 No.-

Polycrystalline diamond (PCD) tools possessing high hardness and abrasive wear resistance are particularly suited for drilling of carbon fiber reinforced plastic (CFRP) composites, where tool life and consistent hole quality are important. While PCD presents superior performance when drilling CFRP, it is unclear how it performs when drilling multi-stack materials such as CFRP-titanium (Ti) stacks. This comparative study aims to investigate drilling of a Ti plate stacked on a CFRP panel when using PCD tools. The first sequence of the drilling experiments was to drill 20 holes in CFRP only. CFRP-Ti stacks were then drilled for the next 20 holes with the same drill bit. CFRP holes and CFRP-Ti stack holes were evaluated in terms of machined hole quality. The main tool wear mechanism of PCD drills is micro-fractures that occur when machining the Ti plate of the stack. Tool wear increases the instability and the operation temperature when machining the Ti plate. This results in high drilling forces, large hole diameter errors, high surface roughness, wider CFRP exit thermal damage, and taller exit Ti burrs.

POTENTIAL BIODIESEL FUEL FROM STERCULIA FOETIDA WITH ZERO WASTE SYSTEM

Dave Albert Patrimonio,Ana Marie Piodos,Dessere Claire Saragena 국제과학영재학회 2014 APEC Youth Scientist Journal Vol.6 No.1

In order to cope with the huge demand for tomato in various industries, its production has to be optimized using novel approaches. Heavy metals present in soil such as arsenic can potentially affect its growth and quality, and may induce oxidative stress on it by producing free radicals that damage its cells. In this study, the effect of arsenic on the leaves of Solanum lycopersicum was quantified in terms of hydrogen peroxide, which is directly involved in the degradation of eukaryotic cells when there is oxidative stress. Tomato seeds grown in an ambient temperature of approximately 29°C were exposed to 5 pM arsenic trioxide for 7 days before shoot length was measured and leaves were tested for hydrogen peroxide content spectrophotometrically. Results showed that As-treated plants reached an average height of 9.92 em while control plants reached 11.03 em. Hydrogen peroxide in the leaves is found to be relatively higher on the arsenic-treated plants than on control plants. The former was found to have an H202 concentration of0.257 pM, compared to the 0.15 pM ofthe control. This difference in hydrogen peroxide relates to a 0. 008 p -value in ANOVA and shows that it is significant. Plant physiology may be impeded when exposed to high concentrations of this metal. It is concluded that arsenic contamination inhibits plant growth and induces oxidative stress in the leaf tissue of tomato plants.

Novel inhaled triple therapy in COPD

( Dave Singh ) 대한결핵 및 호흡기학회 2019 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.127 No.-

Triple therapy is the combination of an inhaled corticosteroid (ICS) with long acting beta agonist and long acting muscarinic antagonist; this is most conveniently administered using a single inhaler. The single inhaler triple combination containing beclometasone dipropionate, formoterol fumarate and glycopyrronium has been evaluated in three large clinical trials, which have consistently shown clinical benefits versus double combinations and long acting bronchodilator monotherapy. Importantly, triple therapy reduces exacerbation rates in COPD patients with a history of exacerbations despite previous treatment with double combinations inhalers or long acting bronchodilator monotherapy. This triple combination has an extra-fine formulation, allowing an increased fraction to be delivered to the small airways. This allows a reduction of the ICS dose, which limits the potential for ICS related adverse effects. This novel inhaled triple therapy provides a treatment option for COPD patients with a high symptom burden and exacerbations.

Blood Eosinophil Counts in Chronic Obstructive Pulmonary Disease: A Biomarker of Inhaled Corticosteroid Effects

( Dave Singh ) 대한결핵 및 호흡기학회 2020 Tuberculosis and Respiratory Diseases Vol.83 No.3

Blood eosinophil counts have emerged as a chronic obstructive pulmonary disease (COPD) biomarker that predict the effects of inhaled corticosteroids (ICS) in clinical practice. Post-hoc and prospective analysis of randomized control trials have shown that higher blood eosinophil counts at the start of the study predict a greater response to ICS. COPD patients with frequent exacerbations (2 or more moderate exacerbations/yr) or a history of hospitalization have a greater response to ICS. Ex-smokers also appear to have a greater ICS response. Blood eosinophil counts can be combined with clinical information such as exacerbation history and smoking status to enable a precision medicine approach to the use of ICS. Higher blood eosinophil counts are associated with increased eosinophilic lung inflammation, and other biological features that may contribute to the increased ICS response observed. Emerging data indicates that lower blood eosinophil counts are associated with an increased risk of bacterial infection, suggesting complex relationships between eosinophils, ICS response, and the airway microbiome.

CELEBRITIES AS HUMAN BRANDS: AN INQUIRY ON STAKEHOLDER-ACTOR CO-CREATION OF BRAND IDENTITIES

Dave Centeno,Jeff Jianfeng Wang 글로벌지식마케팅경영학회 2016 Global Marketing Conference Vol.2016 No.7

This paper examines the co-creation of human brands identities exemplified by celebrities in a stakeholder-actor approach. By bringing together the theoretical web of service-dominant logic, stakeholder theory, actor-network theory, and consumer culture theory, we argue that human brand identities are co-created by multiple stakeholder-actors that have resources and incentives in the activities that make a up an enterprise of a human brand, including the celebrities themselves, consumer-fans, and business entities. By utilizing an observational, archival netnographic data from popular social media channels, four exemplars of celebrity identities from the Philippines demonstrate the co-creation of human brands. Findings illustrate key stakeholder-actors’ participations, production and consumption, and integrations of resources and incentives in the co-creation process as articulated in social media. The co-creation process happens through sociological translations codes namely: social construction and negotiation of identities, parasocialization, influence projection, legitimization, and utilization of human brand identities. These dynamics of human brand identity advance a stakeholder-actor paradigm of service co-creation that is adaptive to the predominant consumer culture and human ideals that surround the celebrity. Implications and future research on celebrity brand marketing management are discussed.

EFFECTS OF NARROWED SOCIAL DISTANCES ON LOCAL AND INTERNATIONAL CELEBRITY-ENDORSED ADVERTISEMENT ATTITUDES: TOWARDS A RELATIONAL APPROACH

Dave Centeno,Jeff Jianfeng Wang 글로벌지식마케팅경영학회 2018 Global Marketing Conference Vol.2018 No.07

This paper examines the effects of narrowed social distance with celebrity endorsers (i.e., via close relationship categories) and their origin (i.e., local or international) on consumer evaluations towards their endorsed advertisements. It is proposed that employing a relational approach in celebrity endorsement where celebrities are framed as sociallyclose personae leads to increased attitudes toward the advertisement. A pilot test on actual advertisements and three laboratory studies show that the celebrity endorsement is more effective when the advertisement features the celebrities as socially-close personae than when they are more distant; and these effects are more pronounced when the celebrity is local than foreign. Finally, the study proposes that consumer self-referencing towards celebrities mediates these effects. Anchored on construal level and social identity theories, implications on relational approach in celebrity endorsements and on international marketing communications are discussed complementarily with Asian culture inherently subscribing to relational celebrity endorsements.

Small Airway Disease in Patients with Chronic Obstructive Pulmonary Disease

( Dave Singh ) 대한결핵 및 호흡기학회 2017 Tuberculosis and Respiratory Diseases Vol.80 No.4

Small airway disease (SAD) has been recognized for many years as a central feature of chronic obstructive pulmonary disease (COPD). Histopathology studies have shown that the narrowing and destruction of small airways in COPD combined with inflammatory cell infiltration in the submucosa increases the severity of the disease. SAD is present in the early stages of COPD and becomes more widespread over time as the disease progresses to more severe COPD. The development of inhalers containing extra-fine particles allows the small airways to be pharmacologically targeted. Recent clinical trials have shown the efficacy of extra-fine triple therapy that targets the small airways in patients with COPD. This article reviews the importance and treatment of SAD in COPD.

Two Modified Z-Source Inverter Topologies - Solutions to Start-Up Dc-Link Voltage Overshoot and Source Current Ripple

Dave Heema Bharatkumar,Dheerendra Singh,Hari Om Bansal 전력전자학회 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.6

This paper proposes two modified Z-source inverter topologies, namely an embedded L-Z-source inverter (EL-ZSI) and a coupled inductor L-Z source inverter (CL-ZSI). The proposed topologies offer a high voltage gain with a reduced passive component count and reduction in source current ripple when compared to conventional ZSI topologies. Additionally, they prevent overshoot in the dc-link voltage by suppressing heavy inrush currents. This feature reduces the transition time to reach the peak value of the dc-link voltage, and reduces the risk of component failure and overrating due to the inrush current. EL-ZSI and CL-ZSI possess all of the inherent advantages of the conventional L-ZSI topology while eliminating its drawbacks. To verify the effectiveness of the proposed topologies, MATLAB/Simulink models and scaled down laboratory prototypes were constructed. Experiments were performed at a low shoot through duty ratio of 0.1 and a modulation index as high as 0.9 to obtain a peak dc-link voltage of 53 V. This paper demonstrates the superiority of the proposed topologies over conventional ZSI topologies through a detailed comparative analysis. Moreover, experimental results verify that the proposed topologies would be advantageous for renewable energy source applications since they provide voltage gain enhancement, inrush current, dc-link voltage overshoot suppression and a reduction of the peak to peak source current ripple.